28044542545 has 16 divisors (see below), whose sum is σ = 35556408000. Its totient is φ = 21175777728.

The previous prime is 28044542543. The next prime is 28044542567. The reversal of 28044542545 is 54524544082.

It is a cyclic number.

It is not a de Polignac number, because 28044542545 - 2¹ = 28044542543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28044542543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523155 + ... + 574264.

It is an arithmetic number, because the mean of its divisors is an integer number (2222275500).

Almost surely, 2^28044542545 is an apocalyptic number.

It is an amenable number.

28044542545 is a deficient number, since it is larger than the sum of its proper divisors (7511865455).

28044542545 is a wasteful number, since it uses less digits than its factorization.

28044542545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097712.

The product of its (nonzero) digits is 1024000, while the sum is 43.

The spelling of 28044542545 in words is "twenty-eight billion, forty-four million, five hundred forty-two thousand, five hundred forty-five".